Customize Help/Documentation

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Is your feature request related to a problem? Please describe.
I would like to customize the documentation that appears when clicking on the "help" button of the user menu (which redirects to https://the-domain/settings/help)

Describe the solution you'd like

I tried the solution suggested in https://help.nextcloud.com/t/custom-help-link-to-a-specific-documentation/54855 that proposes to replace the /core/doc/ folder.
It works well for the documentation, but then I'm faced with integrity errors.

Describe alternatives you've considered

I could disable the integrity check, but I don't think this is a good practice.

One of the following solution would be nice :

• being able to exclude some folders from the integrity check (as proposed in https://github.com/nextcloud/server/issues/1366)
• being able to provide a custom path for documentation (I think I prefer this solution)

Additional context

Thank you for all the work 👐

Start by tracing the user-menu Help link to /settings/help and reviewing the current /core/doc/ path and integrity-check behavior. Compare the two proposed directions—an excluded folder or a configurable documentation path—and define tests showing that customized documentation works without integrity errors.